The United States Postal Service (USPS) administers and delivers the mail in Puerto Rico – just as it does in the United States. When addressing a letter or package to San Juan, as seen in the table below, “San Juan” is always acceptable per the USPS. There are also “Acceptable Alias(es)” that can be used instead as also shown below. The USPS zip code classifications or “Types” include Standard, P.O. Box, or Unique (to an organization or company) and appear in the table below as well. “Mainland” Puerto Rico utilizes 174 zip codes. In addition, there are 2 separate zip codes for the offshore islands of Vieques and Culebra. For help finding postal/zip or area codes throughout all of Puerto Rico, not just in San Juan, click here.

The primary landline telephone and mobile/cellphone area codes of San Juan and Puerto Rico are 787 and 939, respectively. 939 was added mainly to facilitate the growth of mobile phone use through the years. Like the United States, the country code is “+1”, (i.e. 1+939+###+####). Calling San Juan or elsewhere in Puerto Rico is no different from calling out-of-state from within a U.S. mainland state (i.e. same as calling New York from Texas).

Below you’ll find an interactive table we developed to hopefully help you locate postal/zip codes and/or area codes for communities, subdivisions, areas (like Old San Juan), aliases and more in the San Juan municipality (or vice versa). To find the information you’re looking for, you can (1) simply scroll up and down the page, (2) use the “Search:” box located at the top right of the table below and enter a location, zip code, etc., or (3) you can sort any column you wish by simply clicking on the column heading.

Names in the table highlighted in blue provide links to more information.